Atom Nomenclature for TMX

The atom nomenclature in PDB data files was revised with the release of data in the PDB Format Version 3.0. These changes make the PDB atom names used by PDB compliant with existing IUPAC nomenclature for standard amino acid and nucleotides (Pure & Appl. Chem., 70, 117-142, 1998) with the exception of the well established convention for C-terminal atoms OXT and HXT. A small number of additional changes were introduced in Version 3 to make atom labeling more conventional. The following chemical diagrams and tables provide the correspondences between atom names used in Version 3 and Version 2 PDB formats.

Labeled Chemical Diagrams

Chemical diagram with format V3 atom labels (heavy atoms)
Chemical diagram with format V3 atom labels (all atoms)
Chemical diagram with format V2 atom labels (heavy atoms)
Chemical diagram with format V2 atom labels (all atoms)

Atom Name Correspondences for TMX

Atom Name (V3) Atom Name (V2)
C1 C1
O1 O1
C2 C2
N2 N2
C3 C3
O3 O3
C4 C4
O4 O4
C5 C5
O5 O5
C6 C6
O6 O6
C7 C7
C8 C8
C9 C9
H1 H1
HO1 HO1
H2 H2
H3 H3
HO3 HO3
H4 H4
HO4 HO4
H5 H5
H61 H16
H62 H26
HO6 HO6
H17 H17
H27 H27
H37 H37
H18 H18
H28 H28
H38 H38
H19 H19
H29 H29
H39 H39